Valve-indicator.



J. G. LAWSON.

' VALVE INDICATOR.

APPLIOATIOH FILED NOV. 19, 1913 1,103,9 17. Patented July 14,1914

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M in. g ATTORNEY Warren sra'rns PATENT QFFICE.

JASPER C. LAWSON, OF SAN FRANCISCO, CALIFORNIA.

VALVE-INDICATOR.

Specification of Letters Patent.

Application filed November 19, 1913.

Serial No. 802,006. A.

'1 0 an. It/1.01114] may com-em Be it known that I, JASPER (.7. LAwsoN, a citizen of the United Htales,1esi1liugat b'an l ran ris -o, in the county of San Francisco and twtate of Califmnia, have invented new and useful lniprmeinents in Valve-Indicttors, of which the following is a specification. v

The object of the present invention is to provide a detachable and adjustable device for indicating the extent to which a valve controlling steam .or other fluid should be opened to produce desiredresults.

.In the accompanying drawing, Figure 1 is a side View of a valve equipped with my invention; 1* ig.-2 is a front view of the indicator f-detached; Fig. 8 is a perspective view of a button detached.

Referringto the drawing, 1 indicates the stern of a valve for controlling steam or other lluid, and having a head 011 said stem 1 dctachably secure, by a clamping device 3 and screw a, a pointer 5. By this. contrivance the pointer can be adjustably secured on the stem so that it may be caused to indicate accurately according to the mag nitude of the How of the fluid atvarious positions. I

(,3 indicates the hexagonal stuffing (box through which the valve stem extends.

In my invention 1 provide a disk 7 having a radially extending slot 8 sufficiently wide to permit the stem 1 to pass therein to .the center of the disk, and at the back of said disk is riveted, as shown at), wings" 1 0 extending, from a spring claiiui-ll havingfa" general hexagonal --for1n to conform withj the shape of thestuffing'box and having diverging ends 1:? to permit it" tolibe conveniently placed around saidi-fs'stniiing, box. Thus, at the same time that the disk is placed around the. stem, the spring is pressed into engagement with the hexagonal stuffing box, so that it is held on said 'tively. By means of these. i: -.fir

can turn at the center of the disk. disk is formed Wlth a circumferential series of indicating marks 13, and also with a c0ncentric series of elongated holes 14. Through any one of these hole can be passed fasteners 15, somewhat resembling in construction the prongs of an ordinary paper fastener, and these fasteners extend from buttons 16 having thereon indicating characters 17, such as ()jl'fiagul the letters H and L, for liiglfaml iox'v rspcebuttons can be adjustably secure to the disk to accurately registcr twith the positions of the pointer when the "alve is opened to give the required magnitude, of flow therethrough. By reason of wear 'on the valve, or other cause it is desirable that these in-- dicating tags shouldbe so made adjustable.

Iclaim:- j i In combinationv tli a "valve stem and stuffing box therefor, a pointer adjustably secured on said stem, a disk having a radially extending slot, by which it can be passed around the stem, a spring secured to the back of the disk and partially surrounding said stufiing box and conforming in shape thereto and having diverging ends, said disk having thereon a circumferential series of indicating marks, and having also a concentric series of elongated holes, fastenors through said holes, and buttons secured by said fasteners in said holes adjustably on the disk and having indicating characters thereon.

In testimony whereof I have'hereunto set my hand inthe presence of two subscribing" witnesses.

JASPER G. LAWSON.

- Witnesses:

FnAuols M. l/VnIoH'r, D. B. RICHARDS.

the

Patented July 14, 1914. 

